diff --git a/Makefile.pre.in b/Makefile.pre.in
index f46b7ad..8371d84 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -866,7 +866,7 @@
 		importlib/test/import_ importlib/test/source \
 		setuptools setuptools/command setuptools/tests setuptools.egg-info \
 		multiprocessing multiprocessing/dummy \
-		curses $(MACHDEPS)
+		curses pydoc_data $(MACHDEPS)
 libinstall:	build_all $(srcdir)/Lib/$(PLATDIR)
 	@for i in $(SCRIPTDIR) $(LIBDEST); \
 	do \